Symptoms of too much draft

[Jones93]

Hearthstone gm 80 Suddenly having some poor burn times burning good dry black locust and burr oak. Seems like midnight to 5 am and I’m down under 350 top plate temp.
Early in December this was not the case would still be over 400 in the am. Nothing has changed all gaskets are in place cats are good do I have to much draft? I have around 30’ if chimney. I have a pipe damper ordered. Pretty much have to have the air control shut right tight to have any response from it, also I notice when starting a fire it’s almost like it sucks the flame out instead of it choking off or the like.

 

[bholler]

Hearthstone gm 80 Suddenly having some poor burn times burning good dry black locust and burr oak. Seems like midnight to 5 am and I’m down under 350 top plate temp.
Early in December this was not the case would still be over 400 in the am. Nothing has changed all gaskets are in place cats are good do I have to much draft? I have around 30’ if chimney. I have a pipe damper ordered. Pretty much have to have the air control shut right tight to have any response from it, also I notice when starting a fire it’s almost like it sucks the flame out instead of it choking off or the like.

With a 30' chimney I can pretty much guarantee you have to much draft

 

[Jones93]

With a 30' chimney I can pretty much guarantee you have to much draft

Yeah kind of always thought it’d be an issue.

 

[stoveliker]

I assume it's colder now outside than early December? That'll give more draft, exacerbating the overdraft you already likely have.